1253156663 has 8 divisors (see below), whose sum is σ = 1404028560. Its totient is φ = 1108442880.

The previous prime is 1253156651. The next prime is 1253156689. The reversal of 1253156663 is 3666513521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253156663 - 2¹⁰ = 1253155639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253156623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539098 + ... + 1539911.

It is an arithmetic number, because the mean of its divisors is an integer number (175503570).

Almost surely, 2^1253156663 is an apocalyptic number.

1253156663 is a deficient number, since it is larger than the sum of its proper divisors (150871897).

1253156663 is a wasteful number, since it uses less digits than its factorization.

1253156663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079057.

The product of its digits is 97200, while the sum is 38.

The square root of 1253156663 is about 35399.9528672003. The cubic root of 1253156663 is about 1078.1233593511.

The spelling of 1253156663 in words is "one billion, two hundred fifty-three million, one hundred fifty-six thousand, six hundred sixty-three".